Build Your Own Ghost Box - Listen to Voices of the Dead

A "Ghost
Box", also called a "Frank's Box" is a portable electronic device first
created in 2002 by EVP enthusiast Frank Sumption for supposed real-time
communication with the dead.

The device is described as a combination white noise generator and an AM
radio receiver which sweeps back and forth through the AM band.

A special voltage control circuit in the device purportedly allows a
disembodied entity to manipulate the noise generator and radio
frequencies to create spoken words largely made up of various
split-second snippets of sound tuned in from the AM band.

Critics of the device claim that
because it relies on radio noise, any meaningful response a user gets
is purely coincidental, or simply the result of "audio matrixing" –
various, unrelated sounds coming together and perceived as a different
sound.

The box could also be manipulated with an AM transmitter to "inject"
responses into the device. However, many investigators using the device
have reported positive results. Sumption has built at least 25 boxes and
encourages other investigators to build their own.

The plans for the
device have been made available through the internet and custom-built
boxes can also be found for sale online.

A
"Ghost Box", also known as a "Frank's Box" is a controversial new tool
within the paranormal field.

Developed by a man named Frank Sumption,
this box is also known as the "Telephone to the Dead," a device that can
allegedly communicate with the other side.

EVPsElectronic voice phenomena (EVP) are electronically generated noises that resemble speech, but are not the result of intentional voice recordings or renderings.Common sources of EVP include static, stray radio transmissions, and background noise.

Some have claimed that these sounds from EVPs are of paranormal origin, while there are natural explanations such as apophenia (finding significance in insignificant phenomena), auditory pareidolia (interpreting random sounds as voices in their own language), equipment artefacts, or simple hoaxes.

Recordings of EVP are often created from background sound by increasing the gain (i.e. sensitivity) of the recording equipment.

Parapsychologist Konstantin Raudive, who popularized the idea, described EVP as typically brief, usually the length of a word or short phrase.